|   CK hub and break-in help? | Edoc
Nov 29, 2002 12:19 AM | | I have a CK ISO Disc rear hub that I have had since about June, and have put about 300mi of hard (read mountains?) trail use + a good bit of road and urban use. I have a 9spd XT 11-32T drivetrain and at about mid-range back-pedal drag is considerable enough to drop the chain onto the bottom of the ft. derailleur. In the low range back-pedaling drops the chain all the way and causes the chain to rest on the chainstay. In the high range back-pedaling will only drop the chain a bit. The rear derailleur is a Shimano LX that is about 1.5 years old and the pulleys have some wear, but still look good. The pulleys have also been cleaned recently. The chain is just a standard Shimano chain that has been cleaned and lubed recently...
Because of the above conditions I believe that it is not the BB but the drag in the hub that is causing the drag. Is this still normal for a CK hub? Could I have the hub pre-load bearings too tight, and how do you check if they are too lose (currently I grab the tire while holding the bike against the ground and push hard with one hand, if there is a pop I tighten the pre-load)? And should I expect this to go away soon, or no? It seems like it has only improved marginally over the past few months. And finally I have had it slip on a few occasions where there wasn't a huge amount of torque on the thing. Is this normal, or is there something wrong? I have a fairly new Shimano XT cassette that has a little bit of play on the driveshell. Also the drive shell is a steel one instead of the Aluminum one. Thank you for your time, I greatly appreciate the help.
Regards,
-Edoc |
| re: CK hub and break-in help? | www.mtnpedaler.com
Nov 29, 2002 4:01 PM | | King says 60 hours break in. You probably have 20 or 30 on yours. But it sounds like you have a few problems. Your hub should not "slip" or "pop". When you tighten the threaded collar on your hub hand tight should be enough. I would contact King or you can contact me through my site www.mtnpedaler.com. Paul |
| re: CK hub and break-in help? | Edoc
Nov 30, 2002 9:22 PM | | Thanks for your reply. Is the threaded collar the one on the cassette? I may be over tightening that... As soon as I can ride again I will make sure that it really is slipping, and then call up King and see what's up. Thanks again for your help.
Regards,
-Edoc |
| It could be one of many things | smudge
Dec 3, 2002 5:12 AM | | There are a few reasons the King hubs drag so much for so long. You could have the preload too high, the seals are very tight out of the box and take about 60 hrs of riding to wear in, and the ringdrive lube is a bit too viscous initially.
The first and easiest thing to do is to check the bearing tension. The owners manual that came with your hub tells you how to do this. If you didn't get one, go download the .pdf from the website.
The seals are very tight at first and there's not much you can do about it. If you can disassemble the hub (very easy, refer to the .pdf) then put a few drops of Tri Flow around the edges of the bearing seals. It helps a lot, although you might have to do this periodically to keep it smooth, at least until the seals break in.
I've found that the factory applied lube in the drive mech is a bit too viscous and should be thinned out with an oil. I usually use Tri Flow (that's what King recommends) but have successfully used Finish Line Cross Country lube as well.
Try those solutions. If they don't work, give King a call. They have outstanding customer service and are always glad to help out.
Sean |
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